Intermitent fuzzy printing

Every now and then we get 1 page that is fuzzy ~ looks like it would if you were drunk :-) If you print it again it's clear ~ nice quality. We've ran the tests to eliminate smearing and light stripes and it still continues to happen. Any ideas as to why this is randomly happening? Thank you.

2 Answers

Anonymous

Re: intermitent fuzzy printing

Most Likely its oil from the drum, has migrated to the encoder.Call a service center, they have to clean the encoder, and If the problem comes back... then the drum assy needs replacing.I've seen this problem many times... Hope that helps.

What is happening is your print head is moving slow. The most likely cause is that the print head block is getting sticky from some ink seeping into it.
2 things you need to do.
1. Remove, ( looking from the front) the left cover. In the middle of the machine, near the bottom, you will see a square block, made of stainless steel ( silver), about 1 inch square. That needs to be cleaned so that the print head gets into print position.
2. Remove the left and right covers, and the ink loader ( where you load the ink sticks) and be sure the cables to the print head are not to tight. Exactly what is happening, is the print head is stopping just short of faulting out, and to far away from the drum to make a clear image. When it stops out to far, the ink spray is scattered out causine that blurry look. Ok ok, it looks like what a page would look like to me, about midnight on Friday or Saturday night. Wellllllllllllllllll midnight would probably be a bit late, maybe about 7 PM on Friday or Saturday LOL.
But one of those 2 things is 99.999999999999 precent the likely culprit. Have a great weekend, and if your prints are blurred 1 AM tomorrow morning, Please don't blame the printer LOL......
Let me know if you need more info ok?

On second thought, Do you intermitteltly drink?? That could be the problem ,, Heheheheheheh, Just kidding.On second thought, Do you intermitteltly drink?? That could be the problem ,, Heheheheheheh, Just kidding.

Oil on the drum encoder's disk produces erroneous positioning signals to the electronics module.This results in the drum rotating at the wrong speed during imaging.The resulting prints appear blurry, with the image distorted in the Y-axis, vertical direction.Figure 1 illustrates the problem.Horizontal, X-axis printhead movement is not affected. Sorry I missed that. But if you want to supply an E-mail I can send you the procedure and part numbers.
PROBLEM:Blurry Prints Caused by Oil-Contaminated Drum Encoder. Oil on the Encoder Wheel causes Drum Rotation Position problemsCAUSE:Oil on the drum encoder's disk produces erroneous positioning signals to the electronics module.This results in the drum rotating at the wrong speed during imaging.The resulting prints appear blurry, with the image distorted in the Y-axis, vertical direction.Figure 1 illustrates the problem.Horizontal, X-axis printhead movement is not affected.

1 Suggested Answer

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Related Questions:

Go to menu on the printer and select "Maintenance" and print "nozzle test pattern".
Clean the printheads by going into menu again and select maintenance and then "cleaning"
Print nozzle test and see if page looks better.
Picture for example of bad and good nozzle test:

This issues looking printer head problem. check the following Steps for cleaning printer head :

Click on the Start button if you have Windows XP. If you have Windows Vista, click the Windows icon that resides in the lower left corner of your computer screen.

Click on "Control Panel," then "Printers and Other Hardware." Finally click on "View Installed Printers or Fax Printers."

Right-click on the name of your printer and choose "Printing Preferences." This should open a new window; next look for a tab or button marked Maintenance, or something similar.

Find the button that says "Print heads" or "Clean the Print heads" and click on it. You may be asked to choose which print heads; choose them all if you are. Make sure there is paper and ink in your printer, and that it is turned on ahead of time.

Take out the page your printer has printed and see if there are any grids or boxes missing. If there aren't, then you can just exit the program--your print heads are not clogged. If there are grids missing, then click on the "Cleaning" or similarly worded button.

Once the cleaning process has completed, print another page to be sure that your print heads are no longer clogged. If they are still clogged, repeat Steps 1-5 until your printer is printing clearly.

Hi, try putting a little 3 in 1 light oil on the bar thgat the print
head runs on, the 'bale bar' as it is called can get dry and jam, only
put a little oin in 6 or 7 places otherwise, you may end up with oil in
the parer drive mechanism.

1. Clear the print queue, and if there are jobs that won't delete, reboot the computer.
2. Now clear the jobs on the printer (cancel job button) until the status light turns green.
3. Put a piece of paper in the manual feed tray on the front.
4. Print a test page.
If the test page prints to the paper in the manual feed tray, then it is set as the default tray. Go into the printer settings and change it to "auto" or tray 1. If the test page prints to tray 1, but the original document you tried to print (when it got stuck) still won't print, cancel the job. Now, again, put paper in the manual feed tray. Try to print the document again and if it pulls from there, go into page setup of your document and change the setting from "manual" to "auto" or tray 1. Clear the job again (if it's stuck) and you should be able to print again. Hope this helps. This is one of the most common solutions - it happens a lot, especially with documents that are emailed from other people and once they get stuck in the queue, nothing will print (except the test pages directly from the printer, like you describe).

I understand that your HP G55 prints the same page again and again.
* Restart Spooler:
To resolve the issue, restart the spooler by following these steps:
1. Click Start, and then Control Panel.
a. For Category View:
1. Click Performance and Maintenance.
2. Click Administrative tools.
3. Double-click Services.
b. For Classic view:
1. Double-click Administrative Tools.
2. Double-click Services.
2. Locate print spooler on the list, right-click and choose Restart.
A progress message will appear and the spooler should be clear.
You should now be able to print or remove the printer driver as
required.